Individuals with a CD4 cell count \documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$\le$$\end{document}≤ 200 cells/μl were eligible for ART, while individuals with a higher CD4 count were asked to return for a reassessment after 6–12 months (with the exception of patients with TB, WHO stage IV, or pregnant women). Here, CD4 is linked to tuberculosis.